Saint Louis, OK Water Safety: 66/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Water systems across Saint Louis produce average compliance results for OK overall — pockets with documented violations exist, and the variation between areas makes checking the specific system serving a given address the most useful step for residents here.
How Saint Louis Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Saint Louis Residents
- Homes built before 1986: 77% — older plumbing may contain lead solder.
- CDC health risk index: 14.95 — above typical levels.
Saint Louis's Water Providers
Federal drinking water records identify 1 system operating in Saint Louis, OK. One of those systems serves the overwhelming majority of residential addresses, concentrating infrastructure management, rate authority, and EPA compliance reporting within a single organization.
Overview
We track water quality and home safety data for 1 ZIP code in Saint Louis, Oklahoma (population ~62), covering 1 community water system serving approximately 375 people region-wide.
No EPA violations recorded across any ZIP codes in Saint Louis — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Saint Louis: C (66/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Saint Louis water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Saint Louis
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 74866 | C | ASHER UTIL DEV AUTH | 375 |
All ZIP Codes in Saint Louis
- 74866 [C]
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Saint Louis Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Saint Louis Infrastructure Age
With 77% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Heavily weighted toward older construction, Saint Louis's housing stock carries a median build year of 1962. That profile puts a majority of homes in the era when lead-soldered copper plumbing was standard practice.
Over half of homes in Saint Louis were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Saint Louis: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Even where utility-side monitoring meets Lead and Copper Rule requirements, the 77% pre-rule share in Saint Louis keeps interior-plumbing variation as a household-level question that aggregate data cannot resolve.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
What You Can Do in Saint Louis
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 77% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Saint Louis, OK